Lo que los fósiles nos enseñan sobre la Tierra (Investigating Fossils)

For thousands of years, militaries around the world were limited to male soldiers. However, throughout history, brave women have stepped out of the background and onto the battlefield. This biographical text covers the important women who’ve broken ground in the military. Famous historical figures such as Joan of Arc, Clara Barton, and Florence Nightingale are covered in depth, while the stories of modern-day heroes are presented to show how women are still affecting change on the front lines. A comprehensive timeline, fact boxes, and historical and modern images complete this...

Introducción biográfica y crítica. 1. Gabriel Celaya: hombre de un tiempo. 2. Gabriel Celaya: poeta en el tiempo. Noticia Bibliográfica. Bibliografía Selecta. Abreviaturas Utilizadas. Nota Previa. Trayectoria Poética. Antología. Índice de Primeros Versos. Índice de Poemas. Índice de Láminas.

Este libro educacional cuenta la historia de una chica en busca de la respuesta a una gran pregunta: ï¿1/2Por quï¿1/2 el agua vale la pena? Enfrascada en su libro, llevarï¿1/2 a los jï¿1/2venes lectores a travï¿1/2s del mundo del agua limpia, su gestiï¿1/2n y la importancia de todos los que trabajan juntos para mantenerla. Escrito para un pï¿1/2blico entre 4 y 8 aï¿1/2os, busca atraer tambiï¿1/2n a lectores de todas las edades. Este libro emplea divertidas ilustraciones y un texto en rima para dar una explicaciï¿1/2n simple de un complejo proceso, a la vez que anima a...

You don't have to live in Europe to be a soccer aficionado. Known as "football" to most people, soccer is a game of speed, skill, and intricate teamwork. Among the many inspirational athletes who make soccer such an exciting sport, few compare to Lionel Messi, the renowned professional footballer from Argentina. Messi's record-breaking skills on the field have earned him the adoration of soccer fans across the globe. In this biography, readers will be exposed to one of the greatest soccer players of all time: a man whose life story is just as thrilling as his incredible ability to score goals.

There are many steps in the nitrogen cycle that include difficult concepts and words: denitrification, prokaryotes, ammonia, and more. With the help of this understandable book, even struggling readers will grasp this cycle of nature. Low-level language, fact boxes, and an extended glossary provide readers with essential vocabulary explanations that allow them to further understand each step of the cycle. Full-color diagrams aid readers' comprehension as they move through the cycle from start to finish, and then around again.